At a press conference, the FBI releases pictures of the suspects they are seeking in connection with the bombings. The suspects are later identified as brothers, Tamerlan Tsarnaev, 26, and Dzhokhar Tsarnaev, Late in the evening, Massachusetts Institute of Technology police officer Sean Collier is shot and killed on campus. Soon after, Tsarnaev brothers carjack a driver in Cambridge.
The driver is released about 30 minutes later. As the police chase them, Tamerlan Tsarnaev and Dzhokhar Tsarnaev throw explosives out the windows and exchange gunfire with officers. Tamerlan is wounded and later dies at Beth Israel Hospital. He had bullet wounds and injuries from an explosion, according to officials. April 19, - Boston police identify the bombers as Tamerlan Tsarnaev and Dzhokhar Tsarnaev, brothers from Cambridge, Massachusetts.
They are of Chechen origin and legally immigrated to the United States. Tamerlan is identified as the person killed in the encounter with police while Dzhokhar Tsarnaev, a student at the University of Massachusetts-Dartmouth, remains at large.
Throughout the day, hundreds of law enforcement officers go door-to-door on 20 streets in Watertown, looking for Dzhokhar Tsarnaev, who authorities believe is still in Massachusetts.
Boston-area residents are asked by authorities to stay inside as the hunt continues for Tsarnaev. Between 6 and 7 p. Law enforcement agents later take Tsarnaev into custody. He is hospitalized in serious condition. April 22, - Tsarnaev is charged with one count of using and conspiring to use a weapon of mass destruction resulting in death and one count of malicious destruction of property by means of an explosive device resulting in death.
May 1, - Three year-olds are arrested in connection with the bombings. The three men are accused of helping Dzhokhar Tsarnaev after the bombing. Federal prosecutors say Azamat Tazhayakov, Dias Kadyrbayev, and Robel Phillipos took items from Tsarnaev's dorm room after the bombing to throw investigators off their friend's trail. Tazhayakov and Kadyrbayev are foreign nationals charged with obstruction of justice.
They are initially held on unrelated visa issues. Dzhokhar and Tamerlan Tsarnaev, both described as jihadists, fled the scene, kicking off a four-day manhunt during which Massachusetts Institute of Technology Police Officer Sean Collier was shot dead. Tamerlan died in a gunfight with police in Watertown, Massachusetts. An injured Dhzokhar, who ran over his brother as he drove away in a stolen Mercedes, was found hours later hiding in a boat parked in a nearby backyard.
A federal jury in Massachusetts convicted Tsarnaev, who was 19 at the time of the attack, on 30 counts and recommended the death penalty for six of them, including using weapons of mass destruction that killed people.
Court of Appeals for the First Circuit in July affirmed most of Tsarnaev's convictions but erased his capital sentences. It found that the lower court wrongly denied requests from Tsarnaev's attorneys to have prospective jurors asked about their media exposure to the facts of the case during the jury-selection process.
The appeals court also ruled that the district court erred by excluding evidence related to a triple murder in Waltham, Massachusetts, on the year anniversary of the Sept. Tamerlan had been implicated in those attacks by his friend Ibragim Todashev.
Yet they and others affected by the attack that killed three people and wounded more disagree about whether convicted bomber Dzhokhar Tsarnaev should be executed - a question the U. Supreme Court will consider on Wednesday when the justices hear the U. But for me, I wanted it. Borgard, who also attended the trial, is against executions of anyone. The Supreme Court is set to hear the federal government's appeal of a lower court ruling overturning Tsarnaev's death sentence and requiring a new trial to determine whether he should get life in prison instead.
Two ethnic Chechen brothers carried out one of the most shocking attacks on U. Tsarnaev, who is 28 now and was 19 at the time, and his older brother Tamerlan detonated two homemade pressure-cooker bombs at the marathon's finish line on April 15, After four days in hiding in the Boston area, the brothers tried to flee, killing Massachusetts Institute of Technology police officer Sean Collier.
In its petition, Justice Department lawyers called Tsarnaev's case "one of the most important terrorism prosecutions in our nation's history".
The Supreme Court very rarely hears cases it's asked to review. However, justices agreed to hear oral arguments and decide by June next year whether to reinstate the original death sentence or uphold the appeal court's decision to ask a lower court to reconsider the sentencing.
Tsarnaev will spend the rest of his life in jail regardless of the Supreme Court's judgement. Who is Dzhokhar Tsarnaev? Rolling Stone defends Boston cover.
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